Description of Business and Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Accumulated deficit	$ (144,842)	$ (129,455)
Cash, cash equivalents, restricted cash, and marketable securities	$ 119,500

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant